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John Lawrence M. Penafiel penafieljlm

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penafieljlm / creditcard.py
Created October 31, 2016 20:02
Python source code attachment for the article at: https://penafieljlm.wordpress.com/2016/10/29/ekoparty-ctf-2016-write-ups/#web-150
#
# creditcard.py
#
# Author:
# John Lawrence M. Penafiel (penafieljlm)
#
# Python source code attachment for the article at:
# https://penafieljlm.wordpress.com/2016/10/29/ekoparty-ctf-2016-write-ups/#web-150
#
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penafieljlm / inst_prof.c
Last active June 23, 2017 06:53
struct Template {
int64_t data_64;
int32_t data_32;
int16_t data_16;
char data_char;
} value {
// the x'es get instructions written onto them
// notice that those instructions are nops
//xxxxxx
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penafieljlm / database_security_notes.md
Created July 18, 2017 15:13
  • Each user gets symmetric key, private key, and public key
  • Symmetric key = encrypts the data that only the user needs to see
  • Private key = decrypts the data shared to the user
  • Public key = encrypts the data shared to the user
  • Symmetric key is encrypted by user PBKDF2 of user's password
  • Private key is encrypted by user's symmetric key
  • Generate recovery codes for user and encrypt copies of symmetric key using these recovery codes
  • Encrypt user symmetric key using organization's public key for key backup mechanism
  • Stroe organization's private key in a password manager or something
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penafieljlm / reversing_blog_draft.md
Last active July 18, 2017 15:29
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penafieljlm / center-center.html
Created July 19, 2017 22:17
<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
html {
height: 100%;
}
body {
height: 100%;
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penafieljlm / extract_domains.py
Last active July 31, 2017 00:11
import re
import tld
# regex by @diegoperini
# taken from https://mathiasbynens.be/demo/url-regex
# modified by @penafieljlm
RE_DOMAIN = re.compile(
r'(?:'
r'\S+'
r'(?'
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penafieljlm / vlc_convert_to_mp3.bat
Created August 1, 2017 03:16
for %a in ("*.*") do "C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" "%a" --sout=#transcode{acodec=mp3,vcodec=dummy}:standard{access=file,mux=raw,dst="%a.mp3"} --intf=dummy --verbose=2 --play-and-exit
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penafieljlm / MuchAdoAboutHacking.md
Last active August 1, 2017 03:20 
/********************************************************************
 *   This C program was generated by spl2c, the Shakespeare to C    *
 *          converter by Jon Åslund and Karl Hasselström.           *
 ********************************************************************/

/* libspl definitions and function prototypes */
#include "spl.h"

int main(void)
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penafieljlm / gist:f732031400b96e7811567acc5f766810
Created August 2, 2017 22:36
Resume Format
* Personal Information
* Education
* Work Experience
* Certifications
* Projects
* Selected Accomplishments
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penafieljlm / wikint-ideas.md
Last active August 12, 2017 11:00